Review on 6 Pack Waterproof LCD Refrigerator And Freezer Room Thermometer With Magnetic Back For Easy Reading And Improved Accuracy by Trisha Griffin

I purchased this to help me troubleshoot and monitor the temperature in my refrigerators. The max and min range is a great feature to have so that you can see the range over a period of time. Before starting, I compared each thermometer against each other. So, I would test all 6 outside the refrigerator, then I would test them all in the same spot of the refrigerator at the same time. Five out of six were within 1.5 degrees of each other. This is within the plus or minus 2-degree product specifications. The 6th one was 3+ degrees off. Five working thermometers would normally be enough, but I'm monitoring two refrigerators with thermometers on 3 shelves each. So, in my case, I really need six. I really don't want to buy another set, just to get one more thermometer.